XRAY RX8 1/8 On Road Competition Racing Car Kit

This is the XRAY RX8 1/8 On Road Competition Racing Car Kit. Born through a passion for performance and developed from a 37-year heritage of dedication to engineering ingenuity, the RX8 was crafted for one reason: to be the definitive representation of XRAY craftsmanship and sophisticated engineering. The quest for realizing this dream has involved the full range resources at XRAY’s disposal: concept & design, research & development in virtual and physical reality, as well as rigorous testing. Joining its brethren in the XRAY family, the RX8 is positioned to capture the hearts and minds of the racing world, and carry them into the Winner’s Circle.
In Depth Features:

Prestige, elegance, luxury: The RX8 is a sophisticated, professional, high-competition 1/8 on-road car and as such the entire design concept and materials used are fully race-oriented. The RX8 features easy access to all drivetrain parts allowing super-quick rebuilds and set-up changes, making it extremely easy to work on.

Lowest CG Platform: Thanks to intelligent design concept and engineering, all parts are positioned ultra-low to create the lowest-possible CG resulting in super-stable and precise handling.

Top Deck Flex Adjustment: Radio plate flex has a significant influence on the handling and performance of an 1/8 on-road car. The RX8 features smart and simple bushings to allow either fixed or flexible radio plate mounting.

XRAY Multi-Flex™ Chassis Adjustment: The smart design of the RX8 chassis allows for the mounting of additional weights or stiffeners for complete chassis adjustment. Whether you need to add weight or stiffen the front or rear, you have a choice of optional front/central/rear machined brass weights and front/central/rear graphite stiffeners. At the front of the car, both the brass weight and graphite insert can be mounted either fixed or flexible to avoid undesired stiffening effect.

Swiss 7075 T6 Aluminum Chassis: The lightweight chassis is CNC-machined from 5mm thick premium Swiss 7075 T6 aluminum and is strategically machined in low-stress areas to make it as light as possible without affecting strength or rigidity. All screw holes on the bottom of the chassis are countersunk, allowing for a very smooth chassis underside with no protruding screw heads. The area under the engine is solid without any openings to ensure maximum strength.

Radio Plate & Electronics: The radio plate is CNC-machined from 2.5mm graphite material and the design allows for the easy removal of the entire radio plate (with all electronics) for quick & easy servicing and cleaning.

Radio Box: The unique compact lightweight radio case features a clean design and layout. The radio case is attached to the side of the radio plate and will fit any standard-size receiver and an optional on/off switch with water-resistant rubber cover. The radio case features a smart quick-exchange port for quick & easy crystal exchange without the need to open the case. The quick-exchange port is protected and sealed with a rubber cover and when using silicone on the sides of the radio case, a complete water-resistant box is created.

Fuel Tank: The 125cc fuel tank with hypertonic tank lid and internal stone-type filter is positioned in the center of the car, and features a unique low-profile design to allow the fuel tank to sit as low as possible. Rubber mounting grommets help to reduce vibration. The special composite mixture used in the molded tank guarantees it to be extremely strong and robust. Gluing of the tank pieces is performed by a special self-developed robotic system that ensures maximum accuracy and precision in pre-heating and gluing.

Adjustable Fuel Tank Height: The 5-cell receiver battery pack is located beneath the fuel tank help create the lowest CG. Using the optional micro-size receiver battery pack allows the fuel tank to be lowered by another 3mm, creating an even lower platform.

Super-lightweight Bulkheads: The bulkheads are the backbone of the car where all the main parts and suspension are mounted, so the flex of the bulkheads has a significant influence on the suspension, handling, and performance of the car. The RX8 features super-lightweight composite bulkheads with a very clean and lightweight design to create the lowest weight and CG, making the RX8 easy to service while allowing easy access to all parts. The bulkheads create a super-solid platform where all parts are mounted; a special composite mixture was developed to allow assembly/disassembly without stressing or wearing the parts.

Easy Battery Pack Removal: The receiver battery pack can be easily removed from beneath the fuel tank by a quick access composite cover on the chassis bottom. An optional graphite cover is recommended for use with a LiPo receiver pack. An optional brass battery holder adds weight to the bottom of the car. Multi-Flex Technology™ allows the mounting of the optional brass or graphite battery holders either affixed directly to the chassis or mounted independently from the chassis.

Aluminum Engine Mounts: The quick-set engine mounts are CNC-machined from premium high-strength aircraft aluminum. The engine mount has a fixed position for super-easy engine installation and gear mesh adjustment.

Easy Gear Mesh Adjustment: The engine mount design allows you to set and fix the engine position for optimum gear mesh adjustment. After initial gear mesh is set, the engine position is permanently set; the engine can be installed/reinstalled at any time without any need for re-adjusting the gear mesh.

Powerful, High-efficiency Brake System: A strong, highly-efficient brake system has been created by focusing on all of the smallest details. The CNC-machined, precision flat-ground ventilated steel brake disk allows fade-free braking in conjunction with the special high-grip brake pads bonded to brake plates. The specially-glued pads are resistant to high heat. The brake disk features extra-deep machined grooves making it very light and the split design allows maximum heat absorption. Precision hand-grinding on a flat grinding machine allows true, wobble-free rotation. The ventilating holes are by design outside of the brake pad area to ensure maximum contact of the pads with the disk. Two spacing springs ensure a proper gap is maintained between the brake pads. Brake inputs are transferred precisely to the brakes thanks to the super-smooth ball-raced brake cam. The aluminum brake cam is machined from 7075 T6 aluminum and both brake disk and brake pads are specially heat treated for maximum lifespan.

World’s Smoothest and Most Efficient Drivetrain: The RX8 drivetrain is the world’s smoothest and most efficient drivetrain. Thanks to the construction of all drivetrain parts, the transmission is super smooth with minimal friction. From the small lightweight axles, through the efficient ratio and optimized pulleys, to the high-speed lightly-oiled bearings and lightweight drivetrain parts, all specifically designed for maximum efficiency.

Hudy Spring Steel™ Drive Shafts: The tiny drive shafts are manufactured from HUDY Spring Steel™, the most effective drive shaft material by the industry leader HUDY. The self-developed top-secret HUDY Spring Steel™ ensures longest drive shaft life, maximum strength, and lowest weight. The front of RX8 is driven by CVD driveshafts, while standard dogbones are used in the rear.

Lightweight Axles: The front 1-way and rear solid axle are small and light, ensuring super-low rotating mass and lowest CG. The super lightweight front 1-way bearing is inserted directly in the axle. The axle body is manufactured from HUDY Spring Steel™, specially hand-ground for maximum precision and smooth operation, additionally heat treated and black coated to ensure long life and maximum performance. The rear composite lightweight axle pulley is inserted on 1-piece solid HUDY Spring Steel axle. All the outdrives are manufactured from HUDY Spring Steel™ and are specially ground for maximum precision. All pulleys have self-cleaning holes.

Premium Silicone Oils: The RX8 kit includes XRAY Premium Silicone Oils, manufactured exclusively for XRAY in Europe by a specialized premium silicone oil manufacturer. Each batch of premium oil is laboratory tested and calibrated to ensure the highest possible consistency and quality from batch to batch. Based on the industry-proven CST rating, the new line of oils is very easy to identify, adjust, and feel.

Hudy Spring Steel™ Diff Outdrives & Wheel Axles: All axle outdrives and wheel axles are manufactured from premium HUDY Spring Steel™ which has been additionally hand ground for maximum precision and easy fit. These parts have unmatched lifespan and maximum strength to withstand the tremendous forces generated by today’s modern nitro engines.

PUR®-reinforced Belts: The drivetrain uses PUR®-reinforced high-efficiency low-friction drive belts to ensure that all power is properly and efficiently transferred to all drivetrain parts.

Low-friction Pulleys: All pulleys are molded from a special composite mixture to ensure ultra-low friction operation, minimal chance of teeth breakage, and high lifespan. Pulley covers feature self-cleaning holes.

2-speed Transmission: The 2-speed transmission parts are installed on a precision-manufactured super-smooth lightweight hollow middle layshaft made from tough HUDY shaft steel, which is additionally heat treated for extra strength and long life. The 2-speed gear adapter is CNC-machined from Swiss 7075 T6 for precision fitment of the 1-way bearing, and allowing super-precise and wobble-free installation of spur gears. The high-quality 1-way bearing is hand-ground before installation for maximum running precision and strength. The 2-speed adapter is manufactured from hardened steel.

Adjustable Side Belt Tensioner: The adjustable side belt tensioner is captured on a graphite plate mounted to the side of the radio plate holder.

High-speed Ball-Bearings: The RX8 is fully ball-bearing equipped and features high-speed, blue-sealed ball-bearings throughout the drivetrain for maximum efficiency. The highest-tolerance and maximum-performance bearings are degreased and lightly oiled with AeroShell Fluid 12 for maximum smoothness and long life.

Absolutely True Spur Gears: Precision-molded spur gears are made from XRAY’s exclusive secret composite blend, allowing the gears to run true and super quiet, while being robust enough to handle the power of a modern nitro engine. The spur gears are molded with a special technique to allow them to be absolutely true, thus improving the drivetrain efficiency. Each gear is stamped with a tooth number for easy identification.

Full-optimized Suspension Geometry: The RX8 features the most advanced, fully-optimized suspension geometry for nitro on-road car racing, designed to provide responsive racing characteristics in all racing conditions. Over the years XRAY has successfully gained and utilized extensive suspension geometry knowledge and self-developed suspension stiffness technology, which have been utilized with great success in electric & nitro cars, both on- and off-road. The ultra-lightweight suspension parts are molded from special composite materials that makes the parts very light yet very durable to withstand the rigors of high-performance racing.

Adjustable Axle Height: Front steering block and rear uprights feature centric and eccentric bushings which allow roll center adjustment as well as positive caster adjustment in front. The eccentric bushings in the rear upright also allows independent wheelbase adjustment. The height of front and rear axles can be easily adjusted with eccentric bushings.

Wheelbase and Weight Balance Adjustment: Wheelbase can be easily adjusted using clips on the front and rear suspension. Moving the arms front or rear can also be used to fine-tune weight balance. Small, robust rear uprights feature two easily-adjustable upper roll center positions which are used for traction adjustment. The uprights feature two body mount adjustment positions depending on the type of body. Also incorporated are shorter and longer pivot ball joints for optimum set-up adjustment.

Adjustment Wheel Offset: Wheel offset is easily adjustable by 0.5–2.5mm using included shims. This affects steering adjustment (when adjusted at the front) and also rear traction characteristics (when adjusted at the rear).

Integrated Suspension Settings™: The design of the RX8 features I.S.S. (Integrated Suspension Settings™). All adjustment possibilities are completely integrated, allowing complete set-up changes without changing or replacing any parts. The use of square eccentric bushings in the front upper bulkheads, as well as in the rear bulkheads for upper & lower suspension, allows for complete geometry adjustment. Roll centers are adjustable in the standard upper & lower positions, as well as in inner and outer positions. High-tensile steel suspension pivot pins are polished for smooth suspension action.

Hudy Spring Steel™ Turnbuckles: All turnbuckles are manufactured from premium HUDY Spring Steel™ making them the strongest turnbuckles on the market, and ensuring highest strength and longest life. All turnbuckles are easily adjustable with the handy turnbuckle tool.

Hardened Pivot Balls: The RX8 pivot ball suspension contains precision pivot balls which are specially hardened for enhanced lifespan and withstanding hard crashes. A total of eight (8) pivot balls are included and are supported by lightweight but strong composite nuts.

Adjustable & Non-Adjustable Shock Pistons: XRAY keyed shock pistons can be used to make adjustable or non-adjustable shocks. Along with the 2-piece adjustable shock pistons, three different non-adjustable pistons are included.

Compact Bumper: The front bumper features an optimized downforce design with outer window inserts which can be removed to increase or decrease downforce. Front upper and lower composite bumpers are made from a special composite material to withstand hard impacts.

Instruction Manual: XRAY Instruction Manuals have become the industry standard, and are simply the best manuals you will ever get with an RC model car. Whether you are a first-time builder or an experienced racer, all instructions are straight-forward and easy to understand. The full color Instruction Manual contains large 3D illustrations that show all assembly details in the easiest and clearest manner.

VIP Customer Treatment: Owning an XRAY model racing car is an experience unto itself. Not only will you own the most premium luxury model racing car in the world, but you will also become a member of the prestigious family of XRAY owners with direct support and service from the XRAY factory. XRAY brings you the most up-to-date RC Web site on the Internet, with daily racing news and the latest product developments. If you have any questions, problems or comments, you can ask the XRAY Support Team or any XRAY Factory Team Driver on the XRAY Support Forum. You can even upload your own set-up sheets or download from the thousands of different set-up sheets available from around the world at the exclusive XRAY Virtual Set-up Sheet Database. That is only the start of the VIP treatment you get by joining Team XRAY.